1. Dobkin, D., The RF in RFID: Passive UHF RFID in Practice, Newnes-Elsevier Inc., Burlington, MA, USA, 2008.

2. Michael, K. and J. McCathie, "The pros and cons of RFID in supply chain management," International Conference on Mobile Business, 623-629, Sydney, Australia, July 11-13, 2005.        Google Scholar

3. Elliot, R. S., Antenna Theory and Design, An IEEE Classical Reissue, John Wiley & Sons, Inc., Hoboken, New Jersey, 2003.
doi:10.1109/9780470544174

4. Raumonen, P., L. Sydanheimo, L. Ukkonen, M. Keskilammi, and M. Kivikoski, "Folded dipole antenna near metal plate," IEEE Antennas and Propagation Society International Symposium, 848-851, Columbus, Ohio, USA, June 22-27, 2003.        Google Scholar

5. Foster, P. R. and R. A. Burberry, "Antenna problems in RFID systems," IEE Colloquium on RFID Technology, 3/1-3/5, London, UK, October 25, 1999.        Google Scholar

6. Griffn, J. D., G. D. Durgin, A. Haldi, and B. Kippelen, "RF tag antenna performance on various materials using radio link budgets," IEEE Antennas Wireless Propag. Lett., Vol. 5, No. 1, 247-250, 2006.
doi:10.1109/LAWP.2006.874072        Google Scholar

7. Aroor, S. R. and D. D. Deavours, "Evaluation of the state of passive UHF RFID: An experimental approach," IEEE Syst. J., Vol. 1, No. 2, 168-176, 2007.
doi:10.1109/JSYST.2007.909179        Google Scholar

8. Chen, S.-L. and K.-H. Lin, "A slim RFID tag antenna design for metallic object applications," IEEE Antennas Wireless Propag. Lett., Vol. 7, No. 1, 729-732, 2008.
doi:10.1109/LAWP.2008.2009473        Google Scholar

9. Chen, H.-D. and Y.-H. Tsao, "Low-profile meandered patch antennas for RFID tags mountable on metallic objects," IEEE Antennas Wireless Propag. Lett., Vol. 9, No. 1, 118-121, 2010.
doi:10.1109/LAWP.2010.2043711        Google Scholar

10. Park, S. Y., J. N. Lee, and J. K. Park, "Design of UHF radio frequency identification metal tag antenna using T-shaped slot," Microwave and Optical Technology Letters, Vol. 53, No. 10, 2011.
doi:10.1002/mop.26297        Google Scholar

11. Bjorninen, T., K. Espejo Delzo, L. Ukkonen, A. Z. Elsherbeni, and L. Sydanheimo, "Long range metal mountable tag antenna for passive UHF RFID systems," IEEE RFID Technologies and Applications Conference, 194-198, Sitges, Spain, Sept. 15-16, 2011.        Google Scholar

12., EPCglobal Frequency Regulations, UHF, http://www.gs1.org/epcglobal/implementation..        Google Scholar

13., Alien Technology, Morgan Hill, CA, USA, http://www.alientechnology.com..        Google Scholar

14., Impinj Inc., Seattle, WA, USA, http://www.impinj.com/..        Google Scholar

15. Curty, J.-P., N. Joehl, C. Dehollain, and M. J. Declercq, "Remotely powered addressable UHF RFID integrated system," IEEE J. Solid-State Circuits, Vol. 40, No. 11, 2193-2202, 2005.
doi:10.1109/JSSC.2005.857352        Google Scholar

16. Mandal, S. and R. Sarpeshkar, "Low-power CMOS rectifier design for RFID applications," IEEE Trans. Circuits Syst. I, Reg. Papers, Vol. 54, No. 6, 1177-1188, 2007.
doi:10.1109/TCSI.2007.895229        Google Scholar

17. Nikitin, P. V. and K. V. S. Rao, "Antennas and propagation in UHF RFID systems," IEEE International Conference on RFID, 277-288, Las Vegas, NV, USA, Apr. 16-17, 2008.        Google Scholar

18. Friis, H. T., "A note on a simple transmission formula," Proc. IRE, Vol. 34, No. 5, 254-256, 1946.
doi:10.1109/JRPROC.1946.234568        Google Scholar

19. Marrocco, G., E. Di Giampaolo, and R. Aliberti, "Estimation of UHF RFID reading regions in real environments," IEEE Antennas Propag. Mag., Vol. 51, No. 6, 44-57, 2009.
doi:10.1109/MAP.2009.5433096        Google Scholar

20. Yojima, H., Y. Tanaka, Y. Umeda, O. Takyu, M. Nakayama, and K. Kodama, "Analysis of read range for UHF passive RFID tags in close proximity with dynamic impedance measurement of Tag ICs," IEEE Radio and Wireless Symposium, 110-113, Phoenix, AZ, USA, Jan. 16-19, 2011.        Google Scholar

21. Hansen, R. C., Electrically Small, Superdirective, and Supercon-ducting Antennas, John Wiley & Sons, Inc., Hoboken, New Jersey, 2006.
doi:10.1002/0470041048

22. Bjorninen, T., M. Lauri, L. Ukkonen, R. Ritala, A. Z. Elsherbeni, and L. Sydanheimo, "Wireless measurement of RFID IC impedance," IEEE Trans. Intrum. Meas., Vol. 60, No. 9, 3194-3206, 2011.
doi:10.1109/TIM.2011.2123190        Google Scholar

23., ANSYS Inc., Canonsburg, PA, USA, http://www.ansys.com/..
doi:10.1109/TIM.2011.2123190        Google Scholar

24. Middleton, W. M., Reference Data for Engineers: Radio, Electronics, Computer, and Communications, Newnes-Butterworth- Heinemann, Woburn, MA, USA, 2002.

25. Best, S. R. and J. D. Morrow, "On the significance of current vector alignment in establishing the resonant frequency of small space-filling wire antennas," IEEE Antennas Wireless Propag. Lett., Vol. 2, 201-204, 2003.
doi:10.1109/LAWP.2003.819686        Google Scholar

26. Subramanian, V., J. M. J. Frechet, P. C. Chang, D. C. Huang, J. B. Lee, S. E. Molesa, A. R. Murphy, D. R. Redinger, and S. K. Volkman, "Progress toward development of all-printed RFID Tags: Materials, processes, and devices," Proc. IEEE, Vol. 93, No. 7, 1330-1338, 2005.
doi:10.1109/JPROC.2005.850305        Google Scholar

27., Voyantic Ltd., Espoo, Finland, http://www.voyantic.com/..
doi:10.1109/JPROC.2005.850305        Google Scholar